package zxj.spay.interceptor;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * 这个拦截器把项目上下文的路径给指向一个controller
 * @author Administrator
 *
 */
public class IndexFilter implements Filter{

	@Override
	public void init(FilterConfig filterConfig) throws ServletException {
		
	}

	@Override
	public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain)
			throws IOException, ServletException {
 		HttpServletRequest request = (HttpServletRequest) req;
		HttpServletResponse response = (HttpServletResponse) res;
		
		String requestURI = request.getRequestURI();
		
		String contextPath = request.getContextPath();
		
		
		if(requestURI.equals(contextPath) || requestURI.equals(contextPath + "/")){
			response.sendRedirect("user/index.htm");
		}else{
			chain.doFilter(request, response);
		}
		
		
	}

	@Override
	public void destroy() {
		
	}

}
